Fastener for sash-cords.



J. D. C. KNAPP.

FASTENER FOR SASH CORDS'.

APPLICATION FILED JULY 1, 1916.

Patented Mar. 20, 1917.

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JOHN D. c. KNAPP, or HonNsILvEnNEvAnA, AssIeNon TO JOHN C. BRoWN, or

DULUTH, MINNESOTA;

FASTENER non. SASH-CORDS.

Specification of Letters Patent.

Patented 'lliar. 2c, 1917.

Original application filed 0etober11, 1915, Serial No. 55,159. Dividedand this application filed July 1,

To all whom it may concern:

3e it known that 1, JOHN D. KNnrr, a citizen of the United States,residing at Hornsilver, in the county of Esmeralda and State of Nevada,have invented certain new and useful Improvements in Fasteners forSash-Cords, of which the following is a specification.

My invention relates to fasteners for sash cords and has for its objectto provide a pronged button which can be forced into the opening in theedge of a window sash and which is provided with barbed members adaptedto clasp the cord to secure the same to the sash without the use ofknots. This application is a division of my co-pending application,Serial Number 55,159, filed October 11, 1915.

The full objects and advantages of my invention will appear inconnection with the detailed description thereof and are particularlypointed out in the claims.

In the drawings, illustrating the application of my invention in oneform,

Figure 1 is a longitudinal sectional elevational view of a portion of awindow frame and sash showing the regular window cord and counterweightwith my fastener applied thereto. Fig. 2 is a front elevational view ofthe fastener prior to the application of the same. Fig. 3 is asideelevational view of the cord with the fastener shown. in Fig. 2 appliedthereto. Fig at is a modification of the device shown in Fig. 3. Fig. 5is an enlarged sectional view taken on line 55 of Fig. 4f.

My window cord fasteners are readily adapted to application with thewindow frames and sash of ordinary construction, as shown in Fig. 1,where a counterweight l0 slides between the Window frame 11 and the wallstud 12 and it attached by means of a. thimble 34 to one end 13 of acord 14c which passes over a pulley 15 secured in the casing 11, and isattached at its other end 16 to a window sash 17.

The fasteners are all punched out of sheet metal in the forms shown inFigs. 2 and 5. The fasteners shown in Fig. 2 have a stem portion 18which is provided at one end with a circular head 19 from which issue anumber of prongs 20, bent outward from head 19 as shown in Fig. 8. Atthe opposite end of stem 18 are a number of rectangular Serial No.107,152.

wings 21 and 22whichissue oppositely from both sides of stem 18 and areseparated by spaces of a width a trifle greater than that of the wings22 and 21. Each of the wings 21 and 22 is provided with a small sharptriangular barb 2e punched out of the body of the fastener, as shown indetail in Fig. 5. The application of this fastener is clearly shown 'inF igs.'1 and 3. The wings 21 and 22 are bent about the end 16 of cord 1%with the barbs 2i pointing inwardly, thus clenchingthe cord and securelyattaching the fastener thereto. The pronged head 19 is of such a sizethat'it just passes into the circular hole 25, with which all sash areequipped, and when the same reaches the bottom of the hole 25' and isgiven a blow with a hammer the prongs 2O straighten out'and hold head19' inplace within said hole, allowing the cord 1% to fall in the usualgroove 26, as clearly shown in Fig. 1.

In case thefastener shown in Fig. 3 proves tobeftooflexible I employ theform shown in Fig. d',"which is not so advantageous in that it has oneless prong and is more eX- pensive to'make. In this fo'rma double headis used comprising portions 35 and 36 which are, respectively, providedwith prongs 37 and 38. From heads 35 and 36 issue stems 39 and 4.0 atthe end of which are barbed wings 41 and 42. The whole is punched out ofone piece of metal, the heads being fastened together and folded overeach other at 1:3. Stem L0, it will be noted, is shorter than stem 39,so that wings i2 lit in the spaces between wings a1, and vice versa,making the same firmly grip and hold the cord attached thereto. The twostems 39 and 40 being spread, as indicated, greatly stiffens the deviceand holds the cord more securely in place within the groove 26.

The advantages of my invention are manifest. The fastener is simple andeasy to, make. It is readily attached to the cord and the sliding partsby the simple use of a hammer, eliminating the use of knots or otherclumsy expedients, and yet giving a firm hold on the parts gripped. Italso takes up the wear which would otherwise be given to the cord, thusprolonging the life of the same.

I claim:

1. In combination with a sash having acylindrical seat in the sidethereof and a groove extending therefrom, a member havingoppositely-extended pairs of barbed wings to engage about a cord in saidgroove adjacent the end thereof and secure the member thereto, and apronged disk on the end of said member adapted to enter said seat andconnect the cord with the sash, said disk having the prongs thereofradially curved toward the center of the disk so that they may be forcedinto the wood surrounding the seat when they are brought into a commonplane.

2. In combination with a sash having a cylindrical seat in the sidethereof and a groove extending therefrom, a plate-like member having aplurality of prongs bent outward from the plane thereof and adapted toenter said seat and to be forced into the wood surrounding the seat whenthe prongs are brought into the plane of the member, and means on saidmember for securing the same to the end of the sash cord.

3. In combination with a sash having a cylindrical seat in the sidethereof and a groove extending therefrom, a member having a pronged diskon one end adapted to enter said seat, the prongs on said disk beingradially curved toward the center of the disk so that they may be forcedinto the wood surrounding the seat when they are brought into a commonplane, and means on said member for securing the same to the end of thesash cord.

4:. In combination with a sash having a cylindrical seat and a grooveextending therefrom, a member adapted to engage said seat and be securedtherein, said member having a. pair of arms extending upwardly on bothsides of the sash cord, and means on said arms for engaging the sashcord and holding the member in place thereon.

5. In combination with a sash having a cylindrical seat and a grooveextending therefrom, a member adapted to engage said seat and be securedtherein, said member having a pair of arms extending upwardly on bothsides of the sash cord, and oppositely-extended barbed Wings positionedin alternation upon said arms for engaging the sash cord and holding themember in place thereon.

O. In combination with a sash having a cylindrical seat and a grooveextending therefrom, a member adapted to engage said seat and be securedtherein comprising two disk portions bent over on each other and havingalternately-disposed radial prongs bent out of the plane of said disksand adapted to be forced into the wood adjacent said seat when theprongs are brought into the plane of the disks, an arm extending up wardfrom each disk and positioned on each side of the sash cord, and means011 said arms for engaging the cord to hold the fastener in placethereon.

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN D. C. KNAPP. Vitnesses J. IVLYNGH, M. J. CAIN.

fiopies of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents, Washington, D. G.

